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0.19.5 !wave

Looks like you where right about the udev rules earlier, I ran a pacman command to find all untracked files in /usr and I found /usr/lib/udev/rules.d/50-remove-nvidia.rules was there. Contents:

 undefined

    
# Automatically generated by EnvyControl

# Remove NVIDIA USB xHCI Host Controller devices, if present
ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x0c0330", ATTR{power/control}="auto", ATTR{remove}="1"

# Remove NVIDIA USB Type-C UCSI devices, if present
ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x0c8000", ATTR{power/control}="auto", ATTR{remove}="1"

# Remove NVIDIA Audio devices, if present
ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x040300", ATTR{power/control}="auto", ATTR{remove}="1"

# Remove NVIDIA VGA/3D controller devices
ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x03[0-9]*", ATTR{power/control}="auto", ATTR{remove}="1"



  

looks like EnvyControl left some extra files after uninstalling.
Personally, I think it's pretty weird that it put runtime files in /usr/lib, if they where in /etc I would have found them quickly.
The GPU is back on the bus now and I can run optimus-manager to get my extra screen. Thank you for the help troubleshooting this issue.

dkms status doesn't even list half of my DKMS modules for some reason

I don't seem to have an -F on my dkms? when I ran that it without, it didn't rebuild all the DKMS modules for some reason, just bbswitch and evdi

interesting, that did show the nvidia card in dmesg, still not in lspci though

 undefined

    
[ 1110.598286] pci 0000:01:00.0: [10de:1ba1] type 00 class 0x030000
[ 1110.598301] pci 0000:01:00.0: reg 0x10: [mem 0xde000000-0xdeffffff]
[ 1110.598310] pci 0000:01:00.0: reg 0x14: [mem 0xc0000000-0xcfffffff 64bit pref]
[ 1110.598318] pci 0000:01:00.0: reg 0x1c: [mem 0xd0000000-0xd1ffffff 64bit pref]
[ 1110.598324] pci 0000:01:00.0: reg 0x24: [io  0xe000-0xe07f]
[ 1110.598330] pci 0000:01:00.0: reg 0x30: [mem 0xdf000000-0xdf07ffff pref]
[ 1110.599069] pci 0000:01:00.0: vgaarb: bridge control possible
[ 1110.599073] pci 0000:01:00.0: vgaarb: VGA device added: decodes=io+mem,owns=none,locks=none
[ 1110.599078] i915 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=none:owns=io+mem
[ 1110.599125] pci 0000:01:00.1: [10de:10f0] type 00 class 0x040300
[ 1110.599135] pci 0000:01:00.1: reg 0x10: [mem 0xdf080000-0xdf083fff]
[ 1110.599327] pci 0000:01:00.0: BAR 1: assigned [mem 0xc0000000-0xcfffffff 64bit pref]
[ 1110.599335] pci 0000:01:00.0: BAR 3: assigned [mem 0xd0000000-0xd1ffffff 64bit pref]
[ 1110.599341] pci 0000:01:00.0: BAR 0: assigned [mem 0xde000000-0xdeffffff]
[ 1110.599344] pci 0000:01:00.0: BAR 6: assigned [mem 0xdf000000-0xdf07ffff pref]
[ 1110.599347] pci 0000:01:00.1: BAR 0: assigned [mem 0xdf080000-0xdf083fff]
[ 1110.599349] pci 0000:01:00.0: BAR 5: assigned [io  0xe000-0xe07f]
[ 1110.599384] pci 0000:01:00.1: extending delay after power-on from D3hot to 20 msec
[ 1110.599418] pci 0000:01:00.1: D0 power state depends on 0000:01:00.0
[ 1110.599509] snd_hda_intel 0000:01:00.1: enabling device (0000 -> 0002)
[ 1110.599624] snd_hda_intel 0000:01:00.1: Disabling MSI
[ 1110.599630] snd_hda_intel 0000:01:00.1: Handle vga_switcheroo audio client
[ 1110.603829] i915 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=none,decodes=io+mem:owns=io+mem
[ 1110.628268] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card2/input18
[ 1110.628341] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card2/input19
[ 1110.628403] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card2/input20
[ 1110.628464] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card2/input21

  

hmm, maybe downgrading nvidia-dkms might work? I'll try that

yeah, they are a bit of a pain, but it's a new one to me for the card to just disappear completely. It's hard to do any troubleshooting when you can't even access the card.

I had a look at /etc/udev, /etc/modprobe.d and /etc/modules-load.d, and don't see anything related to nvidia. Are there any more udev or blacklist folders to look at?

It's an MSI GE72MVR 7RG, what do mean version?
and it's an integrated intel GPU.

ls: cannot access '/sys/bus/pci/devices/0000:01:00.0': No such file or directory
I also tried booting an archiso and the GPU appears there, there must be something wrong with my install.

It disappeared without me booting into windows, I booted windows to test after it was gone. But I did just try to force a hard shutdown on windows and disabled fastboot, but it's still not appearing.

Yeah, that is annoying. But for the "You won't BELIEVE what this microwave can do! 🤯🤯🤯" or worse the "This appliance from the 90s is going to REVOLUTIONIZE your kitchen!" at least become something that gives you some idea if you want to watch. Unfortunately some good videos are hidden behind shitty titles I otherwise wouldn't click.
Not technology connections obviously, their titles are fine.

It often overcorrects, like not every shitpost really needs a title that sounds like a news article. But for some really clickbaity YouTubers (most) it makes the titles much more usable. The titles are submitted by users, so if the streamer is very small there might be no one to write the titles.

I know a there are a lot of issues with self-hosting email, but I just don't thing this is one of them. First, it probably won't affect a self-hosted servers anyway unless you send a lot of emails, this requirement is only for servers sending 5,000 messages daily to Gmail. And even if you are, the requirements are not that harsh, it's a couple DNS records and a DKIM signing daemon, and if you are using a pre-build email package like mailcow it's probably already doing it.

Thanks for the detailed reply. I found a QSFP+ DAC that says it supports IB and Ethernet.
I don't have enough computers to set up a fabric, only the 2 I would be direct attaching have PCIE slots.

I've never used infiniband before so my reason for wanting to try it is just to learn what it is, and how it works. That said, some of those use-cases look very interesting, especially transporting NVMe namespaces, I didn't know that was possible.

Average road on northern england